To specify layers for ortho components

1. On the ribbon, click Home tab Project panel Project Manager Project Setup.
2. In the Project Setup tree view, expand Orthographic DWG Settings. Click Title Block and Display.
3. In the right pane, under the preview window, click Set Up Title Block.
4. On the ribbon, click Ortho Settings.
5. In the Ortho Generation Settings Dialog box, select the layer on which you want each of the various ortho components to appear. For example, selecting the layer PIPE for piping places all pipe and piping components on that layer. It also sets the ortho objects to ByLayer for color and linetype, allowing these objects to inherit the color and linetype of the PIPE layer.

   Instead of specifying layers, you can select the checkbox Use Same Layering as 3D Model.

6. In the ribbon, click Return to Project Setup.